| 引用本文: | 黄新波,张杰,田毅,朱永灿,乔卫中.风电母线槽热故障状态在线监测系统[J].电力系统保护与控制,2017,45(24):130-137.[点击复制] |
| HUANG Xinbo,ZHANG Jie,TIAN Yi,ZHU Yongcan,QIAO Weizhong.On-line monitoring system for wind power busbar trunk heat fault status[J].Power System Protection and Control,2017,45(24):130-137[点击复制] |
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| 摘要: |
| 风力发电机组容量的不断增大，使得母线槽电力传输系统成为风电输送的主导。风电塔筒由于长期承受各种风况的作用而发生振动，从而引起其内部母线槽连接处的固定螺栓松动和导电排之间的相互摩擦，并使得连接处的接触电阻增大和发热的不断加重，进而破坏母线槽的绝缘性能，甚至造成短路故障。针对这一问题，以红外测温技术为基础，首次提出了一种风电母线槽发热故障在线监测方法。考虑到母线槽所处的特殊环境，设计了专用的红外测温传感器，利用最小二乘算法对温度进行标定，并结合温度补偿法提高了传感器的精度。为了保证数据通信的稳定性，系统采用了RS-485网络及ZigBee无线MESH网络。在现场测试过程中，该系统能够实现母线槽发热故障的实时监测、定位和预警。 |
| 关键词: 风电母线槽 发热故障 红外测温传感器 最小二乘算法 温度补偿 在线监测 |
| DOI：10.7667/PSPC161996 |
| 投稿时间：2016-12-03修订日期：2017-03-17 |
| 基金项目:国家自然科学基金项目(51177115);陕西省重点科技创新团队计划(2014KCT-16) |
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| On-line monitoring system for wind power busbar trunk heat fault status |
| HUANG Xinbo,ZHANG Jie,TIAN Yi,ZHU Yongcan,QIAO Weizhong |
| (College of Electronics and Information, Xi’an Polytechnic University, Xi’an 710048, China;College of Mechanical and Electrical Engineering, Xidian University, Xi’an 710071, China) |
| Abstract: |
| With the increasing of the wind turbine capacity, the busbar trunk power transmission system has become the dominant technique for wind power transmission. The tower tube of the wind power vibrates due to withstanding the influence of various wind conditions for a long time, which causes its internal busbar trunk connections fixed bolt loose and friction between conductive rows, leads to the contact resistance of the connection increases and heating continues to increase, further damages busbar trunk insulation, and even causes short circuit fault. According to this problem and based on the infrared temperature measurement technology, this paper proposes an on-line monitoring method for the first time to the heating failure of wind power busbar trunk. Meanwhile, taken into account the special busbar trunk environment, a special infrared temperature sensor is designed, and then the least square algorithm is used to calibrate the temperature, and the sensor accuracy is improved combined with temperature compensation. In order to ensure the stability of the data communication, the system uses the RS-485 network and the ZigBee wireless MESH network. In the field test, the system can realize the real-time monitoring, positioning and early warning of the heating failure of the busbar trunk. This work is supported by National Natural Science Foundation of China (No. 51177115) and Key Technology Innovation Team Project of Shaanxi Province (No. 2014KCT-16). |
| Key words: wind power busbar trunk heat fault infrared measuring temperature sensor least squares algorithm temperature compensation on-line monitoring |
